About the Authors

Nasheeta Peer

Affiliation Chronic Diseases of Lifestyle Unit, Medical Research Council, Durban, South Africa

Krisela Steyn

Affiliation Chronic Disease Initiative in Africa, Department of Medicine, University of Cape Town, Cape Town, South Africa

Carl Lombard

Affiliation Biostatistics Unit, Medical Research Council, Cape Town, South Africa

Estelle V. Lambert

Affiliation University of Cape Town/Medical Research Council Research Unit for Exercise Science and Sports Medicine, Cape Town, South Africa

Bavanisha Vythilingum

Affiliation Department of Psychiatry, University of Cape Town, Cape Town, South Africa

Naomi S. Levitt

naomi.levitt@uct.ac.za

Affiliations Chronic Disease Initiative in Africa, Department of Medicine, University of Cape Town, Cape Town, South Africa, Division of Endocrinology and Diabetes, Department of Medicine, University of Cape Town, Cape Town, South Africa

Competing Interests

NL has received honoraria from Novartis for serving on the steering committee for the Navigator Trial and travel support from Novo Nordisk, Eli Lilly Laboratories and Sanofi Aventis. All other authors report no potential conflicts of interest, including specific financial interests, relevant to the subject of this manuscript. This study was partially funded by a commercial source (Servier Laboratories [South Africa]). This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: NP KS CL NSL. Analyzed the data: NP CL EVL. Contributed reagents/materials/analysis tools: BV. Wrote the paper: NP KS CL EVL BV NSL.